:root {
  color-scheme: dark;
  --i18n-font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Noto Sans SC", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  --i18n-control-bg: rgba(255, 255, 255, 0.075);
  --i18n-control-bg-hover: rgba(255, 255, 255, 0.12);
  --i18n-control-border: rgba(255, 255, 255, 0.16);
  --i18n-control-text: rgba(255, 255, 255, 0.88);
  --i18n-muted-text: rgba(255, 255, 255, 0.62);
  --i18n-panel-bg: rgba(24, 24, 27, 0.92);
  --i18n-panel-shadow: 0 24px 80px rgba(0, 0, 0, 0.46);
}

html[data-i18n-ready="false"][data-language]:not([data-language="zh-Hans"]) [data-i18n],
html[data-i18n-ready="false"][data-language]:not([data-language="zh-Hans"]) [data-language-selector] {
  visibility: hidden;
}

.topbar-demo {
  gap: 8px;
}

.language-selector {
  position: relative;
  z-index: 90;
  font-family: var(--i18n-font-family);
}

.language-selector-button {
  appearance: none;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--i18n-control-border);
  border-radius: 12px;
  padding: 8px 12px;
  color: var(--i18n-control-text);
  background: var(--i18n-control-bg);
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0;
  white-space: nowrap;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.language-selector-globe {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  font-size: 0.8rem;
  line-height: 1;
  opacity: 0.76;
}

.language-selector-button:hover,
.language-selector-button:focus-visible,
.language-selector-button[aria-expanded="true"] {
  background: var(--i18n-control-bg-hover);
  border-color: rgba(255, 255, 255, 0.26);
  outline: none;
}

.language-selector-button:active {
  transform: scale(0.98);
}

.language-selector-chevron {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  opacity: 0.7;
}

.language-selector-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 176px;
  padding: 6px;
  border: 1px solid var(--i18n-control-border);
  border-radius: 12px;
  background: var(--i18n-panel-bg);
  box-shadow: var(--i18n-panel-shadow);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  backdrop-filter: blur(28px) saturate(1.4);
}

.language-selector-option {
  appearance: none;
  width: 100%;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 0;
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--i18n-control-text);
  background: transparent;
  font: inherit;
  font-size: 0.84rem;
  letter-spacing: 0;
  text-align: left;
  cursor: pointer;
}

.language-selector-option:hover,
.language-selector-option:focus-visible,
.language-selector-option.is-active {
  background: rgba(255, 255, 255, 0.1);
  outline: none;
}

.language-selector-check {
  min-width: 14px;
  color: #f5f5f7;
}

.language-suggestion {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: grid;
  place-items: center;
  padding: 24px;
  font-family: var(--i18n-font-family);
}

.language-suggestion-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.38);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.language-suggestion-panel {
  position: relative;
  width: min(420px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  padding: 22px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(28, 28, 30, 0.94);
  box-shadow: var(--i18n-panel-shadow);
}

.language-suggestion-panel h2 {
  margin: 0 0 8px;
  font-family: var(--i18n-font-family);
  font-size: 1.06rem;
  line-height: 1.28;
  letter-spacing: 0;
}

.language-suggestion-panel p {
  margin: 0;
  color: var(--i18n-muted-text);
  font-size: 0.92rem;
  line-height: 1.68;
}

.language-suggestion-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.84rem;
}

.language-suggestion-checkbox input {
  accent-color: #f5f5f7;
}

.language-suggestion-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 20px;
}

.language-suggestion-button {
  appearance: none;
  min-height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 9px 12px;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.08);
  font: inherit;
  font-size: 0.84rem;
  letter-spacing: 0;
  cursor: pointer;
}

.language-suggestion-button.is-primary {
  color: #0a0a0b;
  background: #f5f5f7;
}

.language-suggestion-button:hover,
.language-suggestion-button:focus-visible {
  outline: none;
  border-color: rgba(255, 255, 255, 0.28);
  filter: brightness(1.06);
}

.language-suggestion-open {
  overflow: hidden;
}

@media (max-width: 760px) {
  .language-selector-button {
    min-height: 34px;
    padding: 7px 10px;
  }

  .language-selector-menu {
    right: auto;
    left: 0;
  }

  .language-suggestion-actions {
    grid-template-columns: 1fr;
  }
}

.site-footer-language .language-selector-button {
  min-height: 32px;
  padding: 6px 10px;
  border-color: rgba(244, 241, 235, 0.12);
  background: transparent;
  color: rgba(244, 241, 235, 0.62);
  font-size: 0.84rem;
}

.site-footer-language .language-selector-button:hover,
.site-footer-language .language-selector-button:focus-visible,
.site-footer-language .language-selector-button[aria-expanded="true"] {
  color: rgba(244, 241, 235, 0.86);
  background: rgba(255, 255, 255, 0.055);
}

.site-footer-language .language-selector-menu {
  top: auto;
  bottom: calc(100% + 8px);
  right: 0;
}